P3494: The cylinder 12 exhaust valve control gives readings outside the normal range
The cylinder 12 exhaust valve control gives readings outside the normal range. It is usually the part, its wiring or a connector with poor contact.
| Code | P3494 |
|---|---|
| System | Engine and transmission |
| Group | P34xx, Cylinder deactivation |
| Type | Generic: it means the same on every make |
How to read and clear P3494 with Final OBD
Plug an OBD2 scanner in under the steering wheel, switch the ignition on and open Final OBD. Under Faults you’ll see P3494 with its description and whether it’s confirmed, pending or permanent.
If the engine stores it over standard OBD, with FREE you read this code with its explanation for nothing and clear it. With PRO you also read the faults of every control unit and clear them in all of them.
Clearing the code only turns the light off: if the cause is still there, it comes back. Clear it once it’s fixed, and not right before an inspection. It’s all in how to read and clear fault codes and in inspections and OBD.
Similar codes
- P3490 The cylinder 12 intake valve deactivation control circuit is not working
- P3491 The cylinder 12 intake valve deactivation control signal is electrically low
- P3492 The cylinder 12 intake valve deactivation control signal is electrically high
- P3493 The cylinder 12 exhaust valve control has a broken or disconnected wire
- P3495 The cylinder 12 exhaust valve control gives a lower signal than normal
- P3496 The cylinder 12 exhaust valve control gives a higher signal than normal
- P3497 The cylinder deactivation system (bank 2) is not working properly
- P34C8 The camshaft position control unit gives readings outside the normal range
What does code P3494 mean?
The cylinder 12 exhaust valve control gives readings outside the normal range. It is usually the part, its wiring or a connector with poor contact.
How do you clear P3494?
With an OBD2 scanner and an app like Final OBD, which clears it for free if it’s stored by the engine control unit. But clearing it only turns the light off: if the cause isn’t fixed, P3494 comes back.
Read it on your car
Final OBD reads and clears engine faults through standard OBD for free, each one explained in plain English. With PRO it also reads the faults of every control unit, each make’s own codes included, and clears them in all of them.
